Found in a 1960s Electronic Design, this circuit provides a signal from the sensing of an analog voltage determined by the zener diode.
The purpose of this circuit presented in a 2009 documentation is to monitor, by means of neon...
This circuit was found in old FET documentation, but it applies to any modern common JFET. The...
This simple voltmeter was found in Popular Electronics from May 1968. The circuit makes use of a...